Territory



UNITED STATES PATENT OFFICE.

DUN CAN MOGORMAOK, OF PARK CITY, UTAH TERRITORY.

VALVE.

SPECYFICATION forming part of Letters Patent No. 517,056, dated March27, 1894. Application filed May 26, 1893. ,Serla1No.475,610. (No model.)

To all whom it may concern.-

Be it known that- I, DUNCAN MOCORMACK, a citizen of the United States,residing at Park City, in the county of Summit, Utah Territory,haveinvented certain new and useful Improvements in Valves; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference markedthereon,whichform a part of thisspecification.

My invention relates to improvements in valves, for water and steampipes and relates particularly to the character of valve known asreciprocating or cut off valves.

The object of myinvention is the provision of a valve of simple, durableand inexpensive construction which will not wear the seat and cause thevalve to leak as is common in valves in general use and thus provideavalve which will be be efficient, lasting and practical.

To attain the desired object the invention consists of a valve embodyingnovel features of construction and combination of parts substantially asdisclosed herein.

The present improvementscontem plate the provision of means for limitingthe valve to endwise movement in the valve-shell, relative to its seat,and to the provision of detachable guide means which, when worn, can bereadily removed from the valve shell, as access can be easily hadthereto, and the worn part can be replaced by a new guide ring,-at atrlfllng expense, and the necessary close joints are thereby secured toproperlylimit the endwise adjustment of the valve while the threadedstem is free toturn in its bearing to effect the endwise adjustment ofthe valve.

Figure 1 represents a vertical longitudinal sectional view of a valveconstructed in accordance with my invention and Fig. 2 represents aperspective view of the parts of the valve detached to clearly showtheir construct1on. Fig. 3 is a cross sectional view on the line 00 a:of Fig. 1 to more clearly indicate the manner in which the guide ring isretained or held within the valve-shell and the valvehead guided withinsaid collar.

Referring by letter to the drawings: A designates the shell or casing,having the usual inlet B and outlet 0, the seat D and the threadedcollar E. The threaded collar receives the cap F, which also receivesthe smaller cap G both being provided with'an opening to receive thevalve stem H, having the wheel or handle J for operating the same. Thethreaded collar E is provided with the interior aunular groove or recessK provided with the kerfs or notches K, and in the recess fits the ringL having the lugs L fitting in the kerfs or notches K','and furtherprovided on the inner face with the kerfs or notches L which form guidesfor the cleats M on the head M carried by the end of the valve stem, andsaid head normally rests in and holds the'cupped valve N upon the valveseat,but when raised by turning the stem, which is provided with thethreads J engaging the threads J the cupped valve will be forced up bythe action of the water or steam and pass through the casing, as isevident. To shut off the valve it is simply necessary to turn the stemand the head thereon will descend into the cupped valve and force itsnugly upon the seat.

It will be seen from an inspection of the drawings that the ring L isretained against rotary movement within the Valve shell by means of thelugs thereon fitting in the kerfs of the valve-shell and thus thevalve-head M is free to have endwise movement within the ring L, but isprevented from turning around with the threaded stem because the latteris swiveled to the head and said head is, in turn, connected with thering by its vertical feathers or lugs fitting in the kerfs or grooves onY the inside of the ring. When the caps are removed from thevalve-shell, ready access can be had to the interior thereof to take outthe guide ring, if it is worn, and replace it by a new guide ring whichwill insure the proper movement of the valve; and as the valve is thusproperly guided in the shell and held from lateral play therein, itsface will not become worn to any appreciable extent, thereby promotingthe durability and efficiency of the valve. It will thus be seen thatthe valve cannot possibly wear upon the seat as is the case with valvesin general use and destroy the efficiency of the valve in acomparatively short period. It will also be understood that the parts ofthe valve are few and of simple and durable construction and thus aninexpensive, elficient and practical valve is proend and having therounded end and cleats duced. for entering the kerfs of said ring, andthe I claim as my invention-- cupped valve adapted to receive the saidThe Valve herein described, consisting of head; the parts being arrangedand adapted I5 5 the shell having the inlet and outlet, the seat tooperate as described.

and the threaded collar having the interior In testimony whereof I affixmy signature in recess provided with the kerfs, the collar the presenceof two witnesses. caps connected to the casing, a ring fitting in DUNCANMCOORMAGK. said recess and having the exterior lugs and Witnesses: tothe interior kerfs, the stern having the lower LEVI SNYDER,

reduced end, the head secured to the reduced MCOLELLAN YATES.

